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@NogDogOct 12.2006 — #
No, it means that the value -- either the literal value as in your example or the value of the variable -- will be passed to the function. The receiving variable will therefore have a local scope only within the function. Any changes made to it will have no effect on any variables of the same name outside of the function (whereas when you pass it by reference, any changes affect the value of the variable that was passed to the function both within and outside of the function, similar to declaring a variable as "global" within a function).
Reading the PHP manual (&$varname)
Hi,
In the PHP manual, if you take a look at, for example, fsockopen:
Description
resource fsockopen ( string target [, int port [, int &errno [, string &errstr [, float timeout]]]] )
Note how errno and errstr both have ‘&’ preceding them. Does the ‘&’ symbol indicate that this paramater is simply a ‘container variable’ to be provided by the coder?
If so, what is the proper term for this?
Thanks.
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@NogDogOct 12.2006 — #To be clear,
Does pass by value mean I'll actually put a real value (not a variable) in to the function call?
Eg,
function_name('Hello my name is Tom'); <-- Pass by value?[/QUOTE]
No, it means that the value -- either the literal value as in your example or the value of the variable -- will be passed to the function. The receiving variable will therefore have a local scope only within the function. Any changes made to it will have no effect on any variables of the same name outside of the function (whereas when you pass it by reference, any changes affect the value of the variable that was passed to the function both within and outside of the function, similar to declaring a variable as "global" within a function).